The rule most new owners haven't heard of
Corporate practice of medicine doctrine — and its equivalents for nursing, psychology, and other licensed professions — restricts who is legally allowed to own and control a business that delivers licensed clinical care. In states where this doctrine is actively enforced, a standard LLC owned by a non-licensed person, or structured without the right professional entity layered in, doesn’t just create a technical paperwork issue. It can call into question whether the business is legally permitted to operate as a clinical practice at all.
This catches people off guard because the LLC feels like the right level of formality. It has an operating agreement, an EIN, a bank account. It looks like a real business. And for most kinds of businesses, it is exactly the right choice. The gap only becomes visible when that same structure is asked to hold a medical practice, and it wasn’t built for that.
Where this shows up in practice
A few scenarios we see often:
- A nurse practitioner opens an aesthetics practice as a single-member LLC, unaware that their state requires a professional entity structure — a PLLC, a PC, or a management services organization paired with a professional entity — for a business delivering injectables and prescriptive services.
- A concierge nursing company forms in one state but expands services into a neighboring state without checking whether that state’s corporate practice restrictions differ, and they often do.
- A staffing company structured as a general LLC starts placing clinicians under arrangements that begin to look like the direct delivery of care, rather than staffing, which shifts what kind of entity is actually required.
- A founder brings on a non-licensed business partner as a co-owner, not realizing that ownership stake itself may violate corporate practice restrictions in states that require clinical entities to be owned by licensed professionals.
None of these are obscure or unusual situations. They’re the normal shape of how practices actually get built — a founder moves fast, forms something reasonable-sounding, and grows from there. The problem isn’t the instinct. It’s that entity structure for a clinical business follows a different rulebook than entity structure for most other businesses, and that rulebook varies meaningfully by state and by license type.
What the right structure usually looks like
There’s no single correct answer here — it depends on your state, your license, your services, and sometimes your ownership group. But the structures that tend to hold up share a few features:
- A professional entity (PC, PLLC, or equivalent) actually owns and delivers the clinical services, owned by appropriately licensed individuals
- If there’s a management or business side — marketing, billing, facilities, non-clinical staffing — it’s structured as a separate management services organization with a clearly defined management services agreement, not blended into the clinical entity
- Ownership documents actually reflect who holds what, rather than informal understandings among founders
- The structure is built for the state where services are delivered, not copied from a template used elsewhere or from a colleague’s practice in a different state
Why this is worth fixing early, not later
Restructuring an existing practice is possible, but it’s more complicated than getting it right at formation. It can trigger tax consequences, require renegotiating agreements with payers or vendors, and in some cases require pausing certain services while the correct entity gets stood up. The practices that come to us after a survey finding or a payer credentialing denial almost always wish they’d asked this question in month one instead of year three.
If you’re not sure whether your current structure fits your state’s requirements for your specific license and services, that’s worth a direct conversation before it becomes a finding on someone else’s checklist.